s/HTTP_PROXY=''/HTTP_PROXY='http\:\/\/127\.0\.0\.1\:7890'/
s/HTTPS_PROXY=''/HTTPS_PROXY='http\:\/\/127\.0\.0\.1\:7890'/
s/ALL_PROXY=''/ALL_PROXY='socks5\:\/\/127\.0\.0\.1\:7890'/
s/http_proxy=''/http_proxy='http\:\/\/127\.0\.0\.1\:7890'/
s/https_proxy=''/https_proxy='http\:\/\/127\.0\.0\.1\:7890'/
s/all_proxy=''/all_proxy='socks5\:\/\/127\.0\.0\.1\:7890'/
